<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>松灵小车控制界面</title>
</head>
<body>
<div>
    <form action="" method='post'>
        点击按钮命令控制松灵小车
        <br><br>
        <br><br><input type=submit value='front' name="前进">
        <br><br><input type=submit value='back' name="后退">
        <br><br><input type=submit value='turn_left' name="左转">
        <br><br><input type=submit value='turn_right' name="右转">
        <br><br>当前状态<br><br>
        {{ message }}
    </form>
</div>
</body>
</html>